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TASK 2:
Calculate the percentage composition of the following compounds. Show your solution.

1. Carbonic Acid (H2CO3)
2. Benzene (C6H6)
3. Calcium Nitrate (CaNO3)


Sagot :

Explanation And Answer:

The formula of calcium nitrate is Ca(NO3​)2​

Thus, the formula mass or molecular mass

=At.massofCa+2×At.massofN+6×At.massofoxygen

=40+2×+6×16=164

% of Ca =16440​×=24

% of N =16428​×=17

% of O =100−(24+17)=59